Data set 01
1972 Thomson CSF
Published operating points and test conditions from this source.
XRay
Other
® INPUT FIELD
16
® INPUT FIELD : 16 cm
® LUMINANCE GAIN [1]
10
® LUMINANCE GAIN : 10 000
® LUMINANCE GAIN [2]
0
® LUMINANCE GAIN : 10 000
considerable expertise in the field of X-ray image intensifier tubes. The TH
9412
considerable expertise in the field of X-ray image intensifier tubes. The TH 9412B has the same dimensions and
electrode voltages as the previous model TH
9412 V
electrode voltages as the previous model TH 9412A ; it can directly replace the latter with improved image
Since the TH
9412 W
Since the TH 9412B performs very high resolution, the power supply must be carefully designed and especially ripple voltages
The TH [1]
7127 W
The TH 7127 THOMSON-CSF power supply designed especially for use with the TH 9412B is highly recommended. It delivers
The TH [2]
9412 W
The TH 7127 THOMSON-CSF power supply designed especially for use with the TH 9412B is highly recommended. It delivers
Published value [1]
0 V
0. 1 % regulated voltages for all electrodes and is directly energized from 110/220 V - 50/60 Hz line supply.
Published value [2]
1 V
0. 1 % regulated voltages for all electrodes and is directly energized from 110/220 V - 50/60 Hz line supply.
Published value [3]
110 V
0. 1 % regulated voltages for all electrodes and is directly energized from 110/220 V - 50/60 Hz line supply.
Published value [4]
220 V
0. 1 % regulated voltages for all electrodes and is directly energized from 110/220 V - 50/60 Hz line supply.
Published value [5]
50 V
0. 1 % regulated voltages for all electrodes and is directly energized from 110/220 V - 50/60 Hz line supply.
Published value [6]
60 V
0. 1 % regulated voltages for all electrodes and is directly energized from 110/220 V - 50/60 Hz line supply.
plate of
2
plate of 2 mm thickness is provided at the output plane of the housing.
Input screen diameter . . . .. L e e e [1]
16
Input screen diameter . . . .. L e e e 16+0.5 cm
Input screen diameter . . . .. L e e e [2]
0.5
Input screen diameter . . . .. L e e e 16+0.5 cm
Output image diameter . . . . . .. .. e [1]
14.212
Output image diameter . . . . . .. .. e 14.2120.5 mm
Output image diameter . . . . . .. .. e [2]
5
Output image diameter . . . . . .. .. e 14.2120.5 mm
Input field diameter . . . . .. . .. ee e
16
Input field diameter . . . . .. . .. ee e 16 cm
Typical resolution (Note
2
Typical resolution (Note 2) :
Minimum luminance gain (Note B) . . .. . .. .. e [1]
10
Minimum luminance gain (Note B) . . .. . .. .. e 10 000
Minimum luminance gain (Note B) . . .. . .. .. e [2]
0
Minimum luminance gain (Note B) . . .. . .. .. e 10 000
Maximum background luminance (Note [1]
7
Maximum background luminance (Note 7) . . . . ... .. . e 0.06 cd/m?
Maximum background luminance (Note [2]
0.06
Maximum background luminance (Note 7) . . . . ... .. . e 0.06 cd/m?
Photocathode pcvoltage . . . . . . . . .. . ee
0 V
Photocathode pcvoltage . . . . . . . . .. . ee . 0 VvV
Electrode gl voltage . . . . . . . . . . . . e
0.3 V
Electrode gl voltage . . . . . . . . . . . . e 0.3 kV
Anode avoltage . .. ... e e
32 V
Anode avoltage . .. ... e e 32.0 kV
cathode K . . L L
0
cathode K . . L L 0 Vv
Photocathode pc maximum current . . .. . Le
500 mA
Photocathode pc maximum current . . .. . Le 0.5 wuA
Electrode g2 maximum CUrrent . . . . .. . L e e
1 A
Electrode g2 maximum CUrrent . . . . .. . L e e 1 WA
Electrode g4 maximum current (after post-gettering operation) . . ... ... ... ... . ... . ... .. ...,
10 A
Electrode g4 maximum current (after post-gettering operation) . . ... ... ... ... . ... . ... .. ..., 10 uA
Anode a maximum current (without X-radiation) . . . . . .. .. . e
2 A
Anode a maximum current (without X-radiation) . . . . . .. .. . e 2 uA
Input diameter for [1]
14
Input diameter for 14. 2 mm OULPUL IMAGE . . . . . . o o ittt e e e e e 16 cm
Input diameter for [2]
2
Input diameter for 14. 2 mm OULPUL IMAGE . . . . . . o o ittt e e e e e 16 cm
Input diameter for [3]
16
Input diameter for 14. 2 mm OULPUL IMAGE . . . . . . o o ittt e e e e e 16 cm
Photocathode pcvoltage . . . . . . . .. .. e e e
0 V
Photocathode pcvoltage . . . . . . . .. .. e e e 0 Vv
Electrode g1 voltage® . . . . . . .. e [1]
160 V
Electrode g1 voltage® . . . . . . .. e 160t0 300 V
Electrode g1 voltage® . . . . . . .. e [2]
300 V
Electrode g1 voltage® . . . . . . .. e 160t0 300 V
Electrode g2 voltage™ . . . . . . ... e [1]
2700 V
Electrode g2 voltage™ . . . . . . ... e 2700t0 3700 V
Electrode g2 voltage™ . . . . . . ... e [2]
3700 V
Electrode g2 voltage™ . . . . . . ... e 2700t0 3700 V
S aAnOde G4 . L L e e e e e e e [1]
2.5
S aAnOde G4 . L L e e e e e e e 2.5t03.0 kV
S aAnOde G4 . L L e e e e e e e [2]
3
S aAnOde G4 . L L e e e e e e e 2.5t03.0 kV
cathode K . .. . e e e e
0
cathode K . .. . e e e e 0 Vv
Ripple voltages must not exceed [1]
0 V
Ripple voltages must not exceed 0. 3 %.
Ripple voltages must not exceed [2]
3 V
Ripple voltages must not exceed 0. 3 %.
* g1, g2 voltages are given for an anode voltage of
30 V
* g1, g2 voltages are given for an anode voltage of 30. O kV.
A
10
A 10 Megohms resistance protecting the tube against discharge must be inserted in series in the anode circuit inside the
As the tube features very high resolution performance, a variation of electrode voltages of
1 V
As the tube features very high resolution performance, a variation of electrode voltages of 1 % can alter the image quality.
Voltages supplies can be applied to the electrodes in a short time but with a slope not exceeding
5 V
Voltages supplies can be applied to the electrodes in a short time but with a slope not exceeding 5 kV/ms.
Let tube at rest with voltages applied for potential stabilization before adjusting it. {
10 V
Let tube at rest with voltages applied for potential stabilization before adjusting it. {10 s minimum).
Electrode voltages in the Test Report are given for an anode voltage of
30 V
Electrode voltages in the Test Report are given for an anode voltage of 30 kV. If the tube is operated at a lower anode voltage,
aluminum filter. The central resolution is given for
70
aluminum filter. The central resolution is given for 70 % of the input field diameter and the peripheral resolution is given for the area between
circles of [1]
70
circles of 70 % and 90 % of the input field diameter.
circles of [2]
90
circles of 70 % and 90 % of the input field diameter.
minimum contrast, X-ray conditions [1]
80
minimum contrast, X-ray conditions : 80 kVp - HVL 7 £ 0. 2 mm Al.input dose rate 100 mR/mn.
minimum contrast, X-ray conditions [2]
7
minimum contrast, X-ray conditions : 80 kVp - HVL 7 £ 0. 2 mm Al.input dose rate 100 mR/mn.
minimum contrast, X-ray conditions [3]
0
minimum contrast, X-ray conditions : 80 kVp - HVL 7 £ 0. 2 mm Al.input dose rate 100 mR/mn.
minimum contrast, X-ray conditions [4]
2
minimum contrast, X-ray conditions : 80 kVp - HVL 7 £ 0. 2 mm Al.input dose rate 100 mR/mn.
minimum contrast, X-ray conditions [5]
100
minimum contrast, X-ray conditions : 80 kVp - HVL 7 £ 0. 2 mm Al.input dose rate 100 mR/mn.
The contrast ratio is measured by inserting a lead disc of [1]
6
The contrast ratio is measured by inserting a lead disc of 6 mm thickness in the center of the tube’s input field and covering 10 % of the input
The contrast ratio is measured by inserting a lead disc of [2]
10
The contrast ratio is measured by inserting a lead disc of 6 mm thickness in the center of the tube’s input field and covering 10 % of the input
are irradiated in the same conditions [1]
80
are irradiated in the same conditions : 80 kVp - 20 mm A filter - HVL 7 * 0.2 mm Al. The luminance is measured by a photometer which
are irradiated in the same conditions [2]
20
are irradiated in the same conditions : 80 kVp - 20 mm A filter - HVL 7 * 0.2 mm Al. The luminance is measured by a photometer which
are irradiated in the same conditions [3]
7
are irradiated in the same conditions : 80 kVp - 20 mm A filter - HVL 7 * 0.2 mm Al. The luminance is measured by a photometer which
are irradiated in the same conditions [4]
0.2
are irradiated in the same conditions : 80 kVp - 20 mm A filter - HVL 7 * 0.2 mm Al. The luminance is measured by a photometer which
where : Mp = magnification measured on a circle covering
90
where : Mp = magnification measured on a circle covering 90 % of the input field.
Mc = magnification measured on a
2
Mc = magnification measured on a 2 cm diameter circle centered on the input field.
Published value
3
3-\ Anode A White
USEFUL INPUT
210
USEFUL INPUT 210